<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Document</title>
        <!-- 引入VUE -->
        <script src="./js/vue.js"></script>
    </head>
    <body>
        <div id="root">
            <h1>今天天气很{{info}}</h1>
            <button @click="changeWeather">点击切换天气</button>
        </div>
        <script>
            Vue.config.productionTip = false;// 阻止vue在启动时生成生产提示
            const vm = new Vue({
                el:'#root',
                data:{
                    isHot:true
                },  
                methods: {
                    changeWeather(){
                        this.isHot = !this.isHot
                    }
                },  
                computed: {
                    info(){
                        return this.isHot == true ? '凉爽' : '炎热'
                    }
                }
            })

            
        </script>
    </body>
</html>